Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 340 | 305 | 344 | 331 | 344 | 333 |
Tmin | 436 | 395 | 447 | 435 | 446 | 419 |
Duration of sunshine | 118 | 110 | 130 | 127 | 126 | 103 |
Precipitation | 185 | 166 | 183 | 179 | 184 | 177 |
Humidity/Visibility | 87 | 84 | 96 | 91 | 101 | 96 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 320 | 322 | 324 | 346 | 332 | 344 |
Tmin | 423 | 426 | 450 | 446 | 439 | 473 |
Duration of sunshine | 109 | 113 | 137 | 116 | 123 | 157 |
Precipitation | 195 | 191 | 219 | 177 | 199 | 207 |
Humidity/Visibility | 85 | 79 | 96 | 79 | 76 | 93 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |